Mathematics
In a grouped frequency distribution, the mid-values of the classes are used to measure which of the following central tendency?
median
mode
mean
all of these
Related Questions
If the classes of a frequency distribution are 1 - 10, 11 - 20, 21 - 30, …., 51 - 60, then the size of each class is
9
10
11
5.5
If the classes of a frequency distribution are 1 - 10, 11 - 20, 21 - 30, ….., 61 - 70, then the upper limit of the class 11 - 20 is
20
21
19.5
20.5
Construction of a cumulative frequency distribution table is useful in determining the
mean
median
mode
all the three measures